Regensburg 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MA: Fachverband Magnetismus

MA 17: Poster Session I

MA 17.16: Poster

Dienstag, 8. März 2016, 09:30–12:30, Poster B1

Spin wave eigenmodes in transversely magnetized thin film ferromagnetic wires — •Sven Stienen¹, Jürgen Lindner¹, Zheng Duan², Ilya Krivorotov², Nathalie Reckers³, and Rodrigo Arias⁴ — ¹Helmholtz-Zentrum Dresden-Rossendorf, Institue of Ion Beam Physics and Material Research, 01328 Dresden, Germany — ²Department of Physics and Astronomy, University of California, Irvine 92697, USA — ³Experimentalphysik - AG Farle, Fakultät für Physik and Center for Nanointegration, Universität Duisburg-Essen, 47048 Duisburg, Germany — ⁴Departamento de Fisica, FCFM, Universidad de Chile, Santiago, Chile

Research in the field of spin transport received increasing attention within the last couple of years, due to the possibility to transmit information without current losses. To utilize spin transport in a defined way, it is necessary to create spin channels to guide spin currents. In this context we present a study of spatially confined spin wave eigenmodes in transversely magnetized thin permalloy wires with three different widths. The focus is put on the strongly localized edge modes, which are investigated by means of broadband ferromagnetic measurements that are compared to an analytic model and micromagnetic simulations. Our data shows that the measured results of the edge mode cannot be explained by just taken into account intrinsic dipolar pinning. Only by inducing an extrinsic edge pinning in the permalloy wires, we are able to give a quantitative description of the eigenfrequency and spatial profile as function of the wire width.